Tenda F3 Plaintext Credential Exposure in Configuration Download

published 2026-02-23 8mo ago modified 2026-06-17 4mo ago also EUVD-2026-7569

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a sensitive information exposure vulnerability in the configuration download functionality. The configuration download response includes the router password and administrative password in plaintext. The endpoint also omits appropriate Cache-Control directives, which can allow the response to be stored in client-side caches and recovered by other local users or processes with access to cached browser data.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 8mo ago (2026-02-23)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA	4.0	7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Shenzhen Tenda Technology Co., Ltd. Tenda F3

Classification

Weakness

CWE-201 Insertion of Sensitive Information Into Sent Data
CWE-525 Use of Web Browser Cache Containing Sensitive Information

References

tendacn.com /product/F3
product
vulncheck.com /advisories/tenda-f3-plaintext-credential-exposure-in-configuration-download
third-party-advisory

Sources

CVE List CVE-2026-27514
NVD CVE-2026-27514

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